Magnetic graphene oxide and vertically-ordered mesoporous silica film for universal and sensitive homogeneous electrochemiluminescence aptasensor platform

Direct and Sensitive Electrochemical Determination of Total Antioxidant Capacity in Foods Using Nanochannel-Based Enrichment of Redox Probes

“…SNF modification layer were grown through the Stöber solution growth method on the supporting ITO electrode [ 51 , 55 , 56 ]. Specifically, CTAB (0.160 g) was completely dissolved in a mixture of 70 mL of ethanol and 30 mL of water.…”

Highly Sensitive Electrochemical Determination of Butylated Hydroxyanisole in Food Samples Using Electrochemical-Pretreated Three-Dimensional Graphene Electrode Modified with Silica Nanochannel Film

“…VMSF is composed of a vertical array of nanochannels perpendicular to the electrode, uniform nanochannel sizes (typically 2-3 nm in diameter), high pore density (up to 10 12 /cm 2 ), adjustable thickness (usually 50-200 nm), and good chemical stability [43][44][45]. Compared to the morphologies of other porous silica materials, these characteristics provide VMSF with rapid mass transfer capabilities and size and electrostatic sieving capabilities at the molecular level [46][47][48][49][50]. For instance, it has been proven that the monomer of microperoxidase-11 (MP-11, Mw 1861, size: 1.1 × 1.7 × 3.3 nm), a hemecontaining peptide with only 11 amine acids, can enter the nanochannels of VMSF through adsorption.…”

Silica Nanochannels as Nanoreactors for the Confined Synthesis of Ag NPs to Boost Electrochemical Stripping Chemiluminescence of the Luminol-O2 System for the Sensitive Aptasensor

“…Electrochemiluminescence (ECL), also termed electrogenerated chemiluminescence, has emerged as an important analytical technique to satisfy sensitive and selective quantitative requirements in various areas, such as food safety, clinical medicine tests, and environmental monitoring. − ECL combines the merits of both electrochemistry and chemiluminescence and displays distinct features, including a low optical background, good sensitivity, fast response, versatility, and temporal and spatial control . Luminol is a kind of typical ECL luminophore and is characteristic of nontoxicity, low excitation potential, high luminous efficiency, and low cost, whose ECL can be significantly enhanced by the coreactant H 2 O 2 for the construction of various luminol-H 2 O 2 coreactant ECL sensors. , However, the intrinsic instability and biological toxicity of exogenous coreactant H 2 O 2 limit wide applications of luminol-H 2 O 2 ECL systems.…”